The All Green Problem: How Fraudsters Beat Every Check
Financial institutions worldwide are losing money to fraud that triggers no alarms — because the system sees nothing wrong
Quick Facts
Financial institutions across the world reported in May 2026 an accelerating fraud trend that has forced security experts to rethink the foundations of modern transaction security. The fraud does not involve breaking into systems, forging identities, or fooling biometric checks — it works precisely because everything looks completely normal.
The system says green — but the money is gone
The phenomenon has been dubbed 'the all green problem' within the security industry. The term describes scenarios in which a transaction passes every automated control without triggering a single alarm: the correct user logs in from their usual device, from their known geographic location, with the right password and any required two-factor authentication. The system detects no anomalies. Everything is green.
And yet, fraud has taken place.
The explanation is that the account holder has either been socially engineered into carrying out the transaction themselves — classic authorized push payment (APP) fraud — or that their account and device have been compromised in a way that leaves no technical traces the AI systems have been trained to recognize.
